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| author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-02-27 09:40:19 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-03-01 14:29:51 +0100 |
| commit | a9c5f6b9ec883ee9dafd6d393600acc6fd263043 (patch) | |
| tree | 35621cff332a0c95509b04b2e4170f0eda1f0ecf /dts/Bindings/spi/sh-msiof.txt | |
| parent | 5ba0e42cb24afdf59d48930daf495c148312fc67 (diff) | |
| download | barebox-a9c5f6b9ec883ee9dafd6d393600acc6fd263043.tar.gz barebox-a9c5f6b9ec883ee9dafd6d393600acc6fd263043.tar.xz | |
dts: update to v4.16-rc1
Also includeded:
ARM: dts: am33xx: do not delete no longer existing clocks
Several clocks are removed from the am33xx dts files with v4.16-rc1.
Remove the corresponding /delete-node/ directives aswell to avoid
dtc breakage.
Also included:
ARM: dts: imx6qdl: SolidRun: Fix upstream include
Upstream dts file way renamed, so change include name accordingly.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/spi/sh-msiof.txt')
| -rw-r--r-- | dts/Bindings/spi/sh-msiof.txt | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/dts/Bindings/spi/sh-msiof.txt b/dts/Bindings/spi/sh-msiof.txt index bdd8395901..80710f0f04 100644 --- a/dts/Bindings/spi/sh-msiof.txt +++ b/dts/Bindings/spi/sh-msiof.txt @@ -36,7 +36,21 @@ Required properties: Optional properties: - clocks : Must contain a reference to the functional clock. -- num-cs : Total number of chip-selects (default is 1) +- num-cs : Total number of chip selects (default is 1). + Up to 3 native chip selects are supported: + 0: MSIOF_SYNC + 1: MSIOF_SS1 + 2: MSIOF_SS2 + Hardware limitations related to chip selects: + - Native chip selects are always deasserted in + between transfers that are part of the same + message. Use cs-gpios to work around this. + - All slaves using native chip selects must use the + same spi-cs-high configuration. Use cs-gpios to + work around this. + - When using GPIO chip selects, at least one native + chip select must be left unused, as it will be + driven anyway. - dmas : Must contain a list of two references to DMA specifiers, one for transmission, and one for reception. |